Damper



B. F. ANNIS.

DAIVIPER.

APPLICATION FILED OCT-21,1921.

' MC1 9,438, Famed me 113, 1922.

@l fm.

BURLEIGr-. F, ANNIS, OF CHATTLPLNOOGA, TENNESSEE.

DAMPER.

mienne.

Application filed october 21, 1921.

To all QU 7mm t may concern Be it `known that l, BUnnnierr F. ANNIs, a` citizen of the United States of America, residing at Chattanooga, in the count-y of Hamilton and State oi Tennessee, have in vented certain new and us YZul improvements in Dampers; and l do hereby declare that the following is a full, clear, concise, and exact description o'l the saine, such as will enable others skilled in the art to which it appertainsvto make and use the same.

This invention relates to improvements in tire places or the so termed dome dampers, having for an object to provide va dome damper embracing a novel construction and arrangement of operating mechanism therefor, whereby the damper may be caused to move to various positions with respect to the dome to increase or decrease the draught in the tire place as may be desired, such mechanism being arranged so that access may be had thereto trom within the lire place and in addition, the ditlerent parts thereof conlined within ythe dome can be readily repaired, replaced or adjusted with respect to each other without the necessity ol removing` the same from the compartment provided there-- Jfor within. said dome.

't is also an object ot the invention to provide a damper operating mechanism within the dome in a position whereat although it is within the dome, it will not be subjected to intense heat given ott' bythe heated products of combustion passing r:troni the i'ireplace through the damper opening in the dome into the chimney lue, lthus eliminating rapid deterioration of such operating mecha* nism, asin the case ot those operating means ofsimilar devices which are arranged witlr in their respective domes but in the direct path of outlet for the heated products oi combustion through the damper openingupon movement o'll `the damper to an open or partially open position.

Other objects will be in part obvious and art pointed out hereinafter. n order that the invent-ion and its mode of operation may be readily understoodby persons skilled inthe art, Lil `have in the accompanying illustrative drawing, and in the den tailed following description based thereon set out one possible embodiment. ot the same.

`in these drawings Figure l is a vtop plan view of the improved damper;

Specification of Letters Patent.

Serial No. 509,24

Figure 2 is al vertical longitudinal section therethrough Figure 3 is a vertical transverse section through the same;

Figure et is an enlarged fragmentary detail in section showing the arrangement of the operating mechanism; and,

Figure 5 is a Ytrag:nentary detail in elevation showing the connection between the compartment closure and the compartment.

"Y ving more particular reference to the drei ing, it will be noted that have shown my improved damper, Ytor purposes of illustration, as arranged in position within a chimney oit a nre place indicated generally by the numeral l.; the dome 2 of the device being 'tormed`with lateral marginal flanges 2 lwhich are adapted to be engaged with and supported Vupon said chimney l. The dome is provided with a substantially rectangulaishaped opening in the top thereof 'which` as will be understood, affords the necessary passage for creation of draught rthrough the chimney lY Ytrom the lire place arranged there below.

A damper or door 3 is provided in the opening` and has bearing pintles el formed upon and e'tending laterally from the intermednte portions or the opposite ends thereot., said pintles being journalled in suitable bearings formed in the adjacent portions of the opposite end walls of the dome L); one ot said pintles being formed with an etension allowing the same to be arranged at a point beyond its respective bearing, tor a purpose which will be subsequently described.

iormed in one end wall of the dome 2 and preferably cast integral therewith is an inwardly opening pocket or compartment which, as will be noted, is so positioned with respect to the damper opening in the upper portion of the dome 2. as to be laterally olisct therefrom and to receive the cmended bearing pintle Nil of the damper door therein. The upper portion of this compartment i3 is open and to close the same, a cover plate 7 is provided, said cover plate cons ing, preferably, oit a cast body vformed with tapering sides and having a laterally disposed apertured ear 8 formed adjacent one end thereo't7 whereby to pern mit ot the connecting olE said plate through the. medium oi a bolt 9, to an adjacent portion oft the dome 2. ln order to prevent swinging movement of the plate about the bolt 9, l may and preferably do form a recess l() in the free end of said plate, whereby the may be engaged over a lug Yll arranged upon the upper marginal portion of the adjacent end wall ofthe conipartn'ient 5. Thus, it will be understood that with tightening of the bolt 9, the cover plate 7 will have connection with the dome and with that wall of the compartment 6 opposite to said connection with the dome.

lith a view towards providing operating mecl'ianisni l'or the damper door, au operating rod l2, preferably square in cross section is passed tlirough bearing openings, one of which is lformed in the front wall of the coinpartnient G while the other is formed vin the rear wall ol? the dome Q, a bearing sleeve l5 adapted to be received in the wall or chimney breast provided with the damper whereby to provide effectual support for the outer extremity of the rod l2, while a handle l-l; is secured to the Vouter end thereof to facilitate rotation of the same. Previous to the engaging of the inner end of the operating rod l2 in the bearing opening in the rear wall of the dome Q, a worm gear l5 is engaged over that portion of the rod within the lower part of the compartment (3 and is secured in adjusted position upon said rod through the medium of set screw 1G engaging a sp it bracket. .lhis worm gear l5 is adapted to mesh with a segmental gear 17 fixedly mounted upon the end of the extended bearing pintle within the con'ipartment 6. Thus, it will be understood that with rotation of the rod l2, pivotal movement of the damper door 3 with respect to the opening therefor in the upper portion of the door 2 will be effected and by consequence, said damper may be adjusted to various positions with relation to said opening for increasing or decreasing the draught to meet with the requirements or desires of a user.

lt, of course, will be understood that the assembly of the operating mechanism consisting of the rod l2, the worm gear l5 and the segmental gear 17 will be materially facilitated bythe removal of the cover plate T from over the upper end of the compartment G. lilith such assembly, however, the cover plate T may be replaced and locked in position over the open upper end of said compartment through the medium of' the bolt 9 and the engagement of the recess lO in said plate over the lug ll on the forward end wall of the compartment 6.

From the foregoing, it is believed that the operation of my improved device will be fully understood; the rod l2 being rotated by engaging the handle let to effect pivotal movement and adjustment of the damper 3 release with relation to the opening therefor in the dome 2 through medium of the worm gear arranged in the compartment 6.

Due to the peculiarl arrangement of the operating mechanism with relation to the damper receiving opening in the top of the dome 2, it will be understood that such mechanism will not be in the direct path of travel taken by the heated products of combustion as they are exhausted from the tire place and discharged into the chimney flue for ultimate delivery to the atmosphere. Hence, it necessarily follows that the operating mechanism consisting of that portion of the rod l2 within the compartment (5, the worm gear l5 and the segmental gear i7 will not be heated to that intense degree as they would be should they be arranged within the direct path of travel of the heated products of combustion passing from the fire place through the damper opening into the chim ney. Because of this arrangement, rapid deterioration of the operating mechanism will be eliminated and further, frequent adjustments of the same, such as would be necessitated by reason of expansion and contraction of the various parts thereof when subjected to different degrees of heat will be avoided. Also, it is to be understood that due to the specific formation of the pocket or compartment 6 with its open upper end, that minor adjustments of the operating mechanism within the saine or repairing or replacing thereof may be effected with but little effort and further, when desired, may be cleaned. Also, it will be understood that access may be had to the operating mechanism from within the dome damper by VWay of the tire place, although to effect adjustments of the mechanism, the removal of the cover plate G is preferable.

Manifestly, the construction shown is capable of considerable modification and such modification as is within the scope of my claims, l consider within the spirit of my invention.

I claim:

l. A fire place damper including a dome, having an integral inwardly opening closed top compartment in one side thereof off-set laterally from the damper opening and acccssible from within the same, a damper in said opening having pivotal mounting in the side walls of the dome, one of the pivotal bearings of said damper being elongated and extending into the laterally offsset compartment, and damper operating mechanism within said compartment for impartingrotary movement to the damper.

2. A fire place damper including a dome having an integral inwardly opening closed top compartment in one side thereof and a damper opening in the top of the dome, said compartment being arranged out of the direct line of draught through said damper opening but accessible from Within the same, a damper in the opening having pivotal mounting in the side Walls of the dome, one

'of the pivotal mountings being elongated and extended into said compartment, and means in the compartment connected to said damper for imparting pivotal movement thereto. Y

A re place damper including a dome having an integral inwardly opening compartment in one side thereof oli-set laterally from the damper opening but accessible from Within the same, the top of said compartment being open, means i'or closing said open top of the compartment, a damper in the opening in the dome having pivotal mounting' in the side Walls thereof, one of the pivotal bearings of said damper being elongated and extending into the laterally oit set compartment and damper operating mechanism Within said compartment connected to said damper for imparting pivotal movement thereto.

4L. A lire place damper including a dome having the top thereof open and an integral inwardly opening compartment in one side Wall thereof off-set laterally from said open top but accessible from Within the dome, a damper received in the open top having bearing pintles upon its opposite ends pivotally engaging the opposite end Walls of said dome, one of said bearing pintles being elongated and extended into the laterally off-set compartment7 the uper end of said laterally of-set compartment being open, a removable plate for covering said open end of the compartment, and a damper operating mechanism Within the compartment connected to said extended bearing pintle.

In Witness whereof I have hereunto set my hand.

BURLEIGH F. AN NIS. 

